The effect of Cs2O additions on HLW wasteform glasses
The effect of Cs2O additions on HLW wasteform glasses
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添加 Cs2O 对 HLW 废玻璃的影响
DOI：
10.1016/j.jnoncrysol.2005.06.035
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发表时间：
2005
影响因子：
3.5
通讯作者：
C. Scales
中科院分区：
文献类型：
--
作者：
B. Parkinson;D. Holland;Mark E. Smith;A. Howes;C. Scales
本文报告了混合碱硼硅酸盐玻璃系统xCs2O（100−x）（MW）（0 × 100 × 100）的物理参数和结构特征，其中MW是BNFL废物玻璃（10.29mol%Li2O，10.53mol%Na2O，18.57mol%B2O3，60.61mol%SiO2）。发现玻璃密度随x增加而玻璃化转变温度（Tg）降低。从11 B魔角旋转核磁共振（MAS NMR）确定的四配位硼（N4）的分数增加与以前的报告的钠锂硼硅酸盐系统的方式一致，相反的戴尔模型。29 Si MAS NMR用于确定的分数Q4（B）和Q3单位作为一个函数的x。拉曼光谱表明，存在的reedmergnerite和丹辉石超结构单元。质量损失的测量结果表明，与x的非线性变化，有一个最大值之间的7和8mol%Cs2O和相关性被发现之间的量Q3单位在固体和从熔体的挥发损失。
Physical parameters and structural characteristics are reported for the mixed alkali borosilicate glass system, xCs2O(100−x)(MW) (0⩽x⩽9.66) where MW is the BNFL wasteform glass (10.29mol% Li2O, 10.53mol% Na2O, 18.57mol% B2O3, 60.61mol% SiO2). Glass density was found to increase with x whilst the glass transition temperature (Tg) decreased. The fraction of four-coordinated boron (N4) determined from11B magic angle spinning nuclear magnetic resonance (MAS NMR) increased with x in a manner consistent with previous reports on the sodium–lithium–borosilicate system and contrary to the Dell model.29Si MAS NMR was used to identify the fraction of Q4(B) and Q3units as a function of x. Raman spectra indicated the presence of reedmergnerite and danburite superstructural units. Mass loss measurements showed a non-linear variation with x, having a maximum between 7 and 8mol% Cs2O and a correlation was found between the amount of Q3units in the solid and the volatilization loss from the melt.